Point Stay Back
Canadian Army Sniper Arthur Godin of Le Régiment de la Chaudière (Mitrailleuses) taking aim from his hide in the interior of a building in Zutphen, Netherlands, on 7 April 1945, during the two-week fight for that city that only concluded on 12 April.
Godin is using an Enfield No. 4 Mk. I (T) sniper rifle with what looks to be a No. 32 3.5x scope, a combo that remained standard for marksmen in the British and Commonwealth forces into the 1960s when it was replaced by the L42A1, a rifle that was essentially the same thing but in 7.62 NATO rather than .303 and with better glass.
He is also using a tactic that was as valid in 1945 as it is today– keeping well away from an opening or loophole to hide his shape, muzzle flash, shadow, and optic reflection from enemy eyes.
Of course, Hollywood always wants to show the sniper hanging out of a window, framing themselves as an excellent target for counter-fire, because Hollywood. It is a sign of a rookie or someone playing at war.
For reference, see the famous video of the YPJ Syrian sniper, who learned that fire goes both ways if you are easily spotted.
As for the Régiment de la Chaudière, they trace their origins to 1812 and the defense of Canada against the invading Americans to the South. The only French-Canadian unit to hit the beach at Normandy on D-Day, they fought from Caen to Calais then across Holland and the Rhineland. Since 1946, they have been a reserve unit based in Quebec but have seen extensive service in Afghanistan. Their motto is Ære perennius (Stronger than bronze).