Marines in Germany?

[IronDuke99]

Given roughly equal weapons, training and technology very few assaults in the real world will work well at much below a 3 to 1 ratio in favour of the attacker.

As I think is noted in the game manual, in the British Army a Company can be expected to assault a enemy platoon, but an enemy company probably needs a battalion to take it out without overly high friendly casualties.

Although note the first paragraph, if the enemy lacks weapons, training or, especially these days, technology (ie, anything from intelligence, to comms, to artillery or air power, etc) that ratio can change in favour of the attacker.