Wade Jackson's Dauntless is shown carrying a single 500lbs bomb and two 100lbs bombs. Yet, when he attacks the two Japanese carriers, he suddenly possesses two 500lbs.
When the Merville Battery is taken and the Brits try to fire a flare, and fails, there is not a single ship on the water. Not even on the horizon. Even if they fired off a flare, the ships wouldn't be able to see it because the curvature of the earth. Yet, less than a minute after the shelling and the flare does go up, suddenly there's formations of warships right off the coast about to land.
German soldiers charging out of the Merville Battery did not happen. Most stayed inside the bunkers. Some fought, others refused to fight because they were Russian conscripts forced to fight for Germany. The conscripts gave themselves up when given a chance.
Aussie Lucas Riggs is wearing a ANZAC blue colored blouse only used during World War I.
The game treats the No.69 grenade as a flash-bang grenade. It was a high-explosive grenade designed to have less power with a shell made of Bakelite, an early plastic. It could still kill people if it landed on or near them.
A Dauntless dive-bomber pilot doesn't close his canopy during a dive. Because his cockpit is not pressurized, the change in air pressure and temperature would cause the windshield to fog up, therefore block his view. That's why they were kept open.
The opening Operation Tonga scene has a British officer giving his stick of paras a talking to that would be impossible in a C-47. The cabin has no insulation and the troop hatch is open. Even if he was screaming at the top of his lungs his men would not be able to hear him properly. Such talks would be given BEFORE they depart.
During the opening of Tonga, a German soldier runs up and stabs a helpless British para hanging from a tree with his bayonet fixed to his rifle. When he stabs, the bayonet remains embedded in the corpse. This wouldn't happen. The lock for the bayonet has a spring loaded button on its grip. Therefore it wouldn't just slide off.
The first German soldier that Kingsley kills is carrying a Mauser 98K rifle, but only has ammunition pouches for an Mp-40 sub-machine gun.
The tachometer in Jackson's plane during the Battle of Midway does not indicate higher and lower RPMs appropriate for the acceleration and deceleration of the plane.
Gasoline is not explosive, so cars should not explode.
On reaching the roof of the post office, Polina cycles the bolt on her rifle. This ejects a shell casing, even though the rifle is full and therefore has no empty shell casings.
Polina can somehow hear her brother despite not having a radio.
Most small arms did not use tracers.
Throughout the campaign there are multiple weapons that appear outside their historical timeline. Such as an MG-42 appearing in 1941 Tobruk, along with a Gustloff Volkssturmgewehr that only appeared in 1945, just before the war ended in Europe. A German Becker revolving shotgun, called an Einhorn Revolving shotgun in game, in the hands of Japanese soldiers. Japanese 6.5mm machine guns on a German train in Europe. Owen submachine guns in North Africa when they were only in the Pacific. Plus many, many others.
Tattoos were both unusual and not very elaborate during the Second World War.
The badge Major Hamm is suppose to be of the Royal Tank Regiment, but it sports a Crusader tank used in North Africa. The real badge has a Mark I tank from World War I. Therefore, the badge Major Hamm wears doesn't historically exist.
At the beginning of The Battle of El Alamein when the convoy is attacked, "Bluey" Smith says, "Could someone please bugger that RPG?"
The term "RPG" (ruchnaya protivotankovaya granata) was and is used by the Soviets to describe their anti-tank rockets, but the term was not used by the German, British, or Americans in reference to German anti-tank rockets, which were called "Faustpatrone" (the first model), "Panzerfaust", and "Panzerschrek" by the Germans and the Allies.
Measurements are in metric despite most Allied countries using Imperial measurements.
The Tobruk map shows a rugged, mountainous environment rather than the nearly flat and open landscape the harbor town was really situated on.
It's not logical to take a US Navy dive-bomber pilot from the Pacific and turn him into a member of the Special Operations in Europe, where his skill set is not used until the end of the game. Throughout most of of the campaign he's just acting as infantry. He may have sunk two Japanese carriers, but that doesn't make him a commando.
After the convoy ambush in Tobruk, the Rats come upon a wounded German and immediately execute him. Not only is this a violation of the Geneva Convention, it also denies them valuable intel if they could interrogate the prisoner.
Wade Jackson understands how to fly both German and Japanese planes that he's had no prior training on, cannot understand their language to read the controls. Yet he's an expert on them as soon as he gets in the cockpit.
In the Tobruk opening, Lucas leaves his explosive charges wired to the detonator. This is a mistake because the detonator is battery powered. If an electrical surge happened then the explosives would go off prematurely. The wires wouldn't attached to the detonator until they were ready to use them.
Despite being impaled and temporarily disabled by the crash, Wade can get up and run with no pain after the 93rd rescues them.