Lee Enfield-related (ish) anniversaries
24 April: Kapyong Day (Korea, 1951) The battle started a few days earlier in Chinese "push', but the decisive action mostly took place on the 24th. Lots of Lee Enfields, Brens, Vickers etc.
25 April: ANZAC Day, of course.
Skip a couple of days.
29 April: HMA Submarine AE2 sunk in the Sea of Marmara off the Dardanelles. After five days of attacking Turkish shipping and running out of torpedoes, AE2 was attacked by Turkish gunboats and the submarine was scuttled and her crew captured.