Armia tatuśka

A Captain Ogilvie from a Highland regiment arrives during a parade and informs Mainwaring that there will be an invasion exercise in the district, involving some of his troops and all of Mainwaring’s.

In the event of an invasion, Mainwaring decides, the platoon will split into two sections, one commanded by Wilson and the other by Mainwaring. When the church bells ring (the signal that an invasion is in progress) Mainwaring’s men scramble to their assigned positions at Godfrey’s cottage, but fail to realise where Wilson’s men are, leading to one section attacking the other.

Private Walker is called-up into the regular Army. The platoon, anxious at how they will obtain off-the-ration supplies without him, fight to keep him. Mainwaring even travels up to Whitehall to appeal against the decision.

When Mrs Pike tells her son Frank there is a little stranger on the way, having agreed to take in a child evacuee, Wilson gets worried, thinking she is pregnant, and begins to plan a wedding.

Mainwaring has the opportunity to promote one of his men to Corporal, and rather than give it to Jones, decides to test who has the greatest potential, by giving Frazer a temporary promotion to Lance Corporal.

After Frazer spots what he believes to be a German spy signalling planes, the platoon arrest a suspect – but he protests he is a naturalised Englishman.