The platoon finally get to grips with the enemy when they have to guard some Nazi Submariners but the Germans turn the tables on Mainwaring and try to escape but somehow Jones ends up with a grenade down his trousers

Godfrey asks to leave the platoon because he doesn't want to fight. Mainwaring is furious and the rest of the platoon shun him until they find out that he was a hero from the first war. So he rejoins the platoon as a medical orderly.

Lance Corporal Jones wants to marry Mrs Fox but has to get Capt Mainwarings permission. During the reception an invasion alert is called and Jones spends his wedding night on the beach doing guard duty

The platoon are assigned guard duty on an isolated, disused pier for a week. However thanks to Pike's poor judgment over what to tie the boat too, they end up stranded with no contact with the mainland and no food. Attempts at Morse code only prompt Hodges to pursue the platoon to get them to 'Put that light out!' and he ends up stranded himself. If that wasn't enough Jones spots a mine has floated under the pier, but does Hodges have a solution that'll 'bowl them over'?

A German pilot has baled out and is caught hanging by his parachute on the clock tower The platoon climb up to rescue him but get trapped themselves

The Colonel orders Mainwaring and the platoon to make a training film with a couple of well known actors but unknown to Mainwaring they are to play the Germans Mainwaring refuses to take part but the rest of the platoon are ordered to When the filming is cancelled Mainwaring and the men still dressed as German soldiers are spotted in the local pub and the alarm is given

Captain Mainwaring decides to enlist women to the platoon to assist with the war effort. After initial interviews go rather less than satisfactory, a Mrs. Fiona Grey walks into his office and into his life. Mainwaring is flattered that Fiona not only has similar views to him about the war, but also is complementary about his persona. He finds himself falling in love, unfortunately the men very quickly realise and start to gossip behind his back and Fiona decides to leave, but can Mainwaring get to the station in time to stop her?

The pumping station of the reservoir has been damaged by a bomb with Walker and Godfrey trapped inside. Hodges is determined to overrule Mainwaring's rescue attempt until it's discovered the structure of the building is very unsafe and they draw lots to decide who is going to be the ones to dig the stranded men out. After successfully reaching Walker and Godfrey, the roof caves in and everyone but Jones ends up trapped in the underground bunker that is now filling rapidly with water. But does Godfrey have a solution that is more useful than asking to be relieved?

During an air raid an unexploded bomb lands on the bank Mainwaring and Wilson find where the bomb has landed and secure it until the bomb disposal people arrive.

The platoon captures a runaway barrage balloon and while trying to secure it Capt Mainwaring is carried aloft

Capt Mainwaring comes up with the idea of small armed patrols to wreak havoc with the enemy using a small reprocessed boat the bank has acquired After a practice on the river they get lost in the fog and they think they have drifted across the channel and are about to be captured by the German's but they are in for a shock when they find out where they really are.

While the platoon are at a training camp Mainwaring gets drunk with the other officers during the night and misses the live grenade training the following morning. Later during the training one of the grenades lands in Jones van and Mainwaring rides to the rescue

During home guard maneuvers LCpl Jones disguised as a log and helped by Frazer in a diving suit floats down the river in order to attack the Eastgate platoons headquarters

The platoon are manning the local lighthouse and they accidently switch on the light and can't find a way to switch it off During an upcoming air raid they must a way to cover up the glare

LCpl Jones goes to a reunion of his old regiment While he is away an old comrade that fought in the same battle joins the platoon and accuses Jones of cowardice On his return Jones has to tell the real story

Vanity swoops through the platoon after Parliament decide that Home Guard members who are not fit for battle must be reassigned to the A.R.P. and A.R.P wardens that are fit should be reassigned to the Home Guard. The platoon obviously don't want this to happen so resort to some rather shocking measures to fool the Area Commander into believing they are suitable to stay where they are.

Lance Corporal Jones has mislaid £500 that has been collected by the merchants to build a center for the local people Frazer hypnotizes Jones and after a long search the money finally turns up.

Godfrey's cottage is due to be demolished to make way for a new airfield but no-one can bring themselves to break the news to him until Jones finds out that he already knows. In the end Frazer, knowing the family history of the General in charge, bribes him to get the airfield moved 200 yards. This results in some rather amusing consequences. The door to Mainwaring's bank office is replaced with a paper door, apart from the insult of not having a proper door Mainwaring is even more annoyed at the fact that Pike the Colonel and Jones manage to destroy it within minutes of it being installed.

When the church bells start to ring the platoon leap into action Jones takes half the platoon to Godfrey's cottage to set up a machine gun post While Wilson not knowing where Jones has gone also heads for the cottage where they both mistake each other for German's and prepare to attack

Capt Mainwaring promotes Frazer to Lance Corporal thus causing friction between him and Jones When Frazer starts getting above himself Mainwaring cancels the promotion

When a low flying German aircraft. attacks Warmington On Sea. the platoon under the command of Lance Cpl Jones, fire at the aircraft, and use up all their ammunition. Mainwaring is furious, and orders an investigation.

Capt Mainwaring is found not to have held the Kings Commission so he is reduced to the ranks and Sgt Wilson takes over command of the platoon After a disastrous war game against the Eastgate Platoon his men ask the Colonel for him to be reinstated

The search begins for a spring clip for a Lewis gun that Frazer has lost while he was cleaning it. The trail leads them through Frazer's workshop to a Funeral Director, to Mr. Bluett's dining room table, to a grave yard. The platoon stop at nothing, committing various crimes including house breaking and grave robbing to get the clip back. But will they find it in time to save Frazer from a court-marshal?

Mainwaring watches a film reel at the cinema which shows Winston Churchill inspecting Army troops and their mascot - a ram, of course where Mainwaring's concerned - if another platoon has a mascot, so must his. Sponge volunteers one from his farm but they have to catch it first, something that of course ends in complete disaster with Pike up to his neck in it - literally. Meanwhile the town parade is being organised and of course Mainwaring wants the platoon to lead, but Hodges has other ideas...

In a cricket Match between the platoon and the air raid wardens, Chief Warden Hodges has a secret weapon up his sleeve. He plans to use England's fast bowler Fred Trueman, but all does not go as planed.