Flames of War: Nachtjager – The Battle for Northern Germany March-May 1945

Description from the back of the book:

This is one of the Late War Supplements for Flames of War. It is focused on the British attacks on Germany late March 1945 onward. It includes histories of the battles for the northern Rhine including Operation Plunder. Game options include rules to field a British Rifle Company, Armoured Squadron and the B Squadron, 15th/19th Hussars. Also are rules for fielding a Marine-Grenadier Kompanie, Panzerkampfgruppe Wallenberg and Panzerkampfgruppe von Benninsen.
This supplement features optional rules for fighting battles at night.