The world owes the United States Marine Corps a debt of gratitude for its role in the destruction of Imperial Japan. Despite having all the technological and material advantages of the United States and its immensely powerful Navy, the Japanese inflicted substantial casualties on them.
Take Tarawa, where despite being heavily outgunned and outnumbered the Japanese inflicted 3110 casualties; this was after an intense naval bombardment and Americans having mastery of the air.
If today’s USMC had to capture an island like Tarawa in similar circumstances, with a heavily entrenched fanatical enemy that will not surrender, how would they do it? Assume time is of the essence (as it was, since we needed the airfield), so we can’t just blockade and starve them out.