Is assaulting Bunkers too hard ?

[wiggum]

One hex is basically 250m x 250m so a "bunker" hex (actually we are talking about Pillboxes) represents more then one small Pillbox/Bunker or one large one + some trenches with more firing positions.

One turn is 30min

There is no surrender feature its basically abstracted into the losses units suffer while assaulted. See the "Finishing Off" rule.

WN60 was the most easterly of the resistance nests guarding OMAHA Beach. It overlooked Fox Sector and the beach exit Fox-1 Draw. It was manned by 40 German soldiers. On D-Day, June 6th 1944,  elements of U.S. 1st Infantry Division landed opposite WN60. The Resistance Nest had one 75mm gun, one French tank turret mounted on a concrete bunker, an Anti-Aircraft position and four mortars. An observation point on the cliffs gave the Germans an excellent view of the beach.

The men of L/116th managed to reach the top of the bluff some time before nine 'o clock and attack WN60 from the rear. Throwing grenades and satchel charges they blasted the Germans out and were able to report the taking of this German position around 09.00.

Bunkers and Pillboxes are great as long as the enemy was a few hundred meters away but once the enemy is on top or behind you you are mostly done for. For most of the WW2 soldiers fighting to the last men and dying in a Bunker when already surrounded was no option so they tried to surrender or flee.

So maybe add a facing to bunker hexes and remove the defensive bonus if attacked from the sides or from behind ?