Recognizing the Marines’ outstanding record in so many amphibious operations in the Pacific, I wondered if they particpated at all in any European theatre. If not, am I correct in assuming it was simply because of their insufficient numbers?
Yes, they did, but usually only in small numbers on shipboard duty, or distributed among other forces in order to provide them with amphibious knowledge and training.
Except for Sicily, the ETO was not really the Marines forte, instead of taking a single island, the amphibious operations in the ETO were to establish a beachhead whereby forces could move inland. Indeed in the only operation of this type in the Pacific, the Phillipines Campaign of '44-45, the Marines did not participate.