I'm looking at WWI and the British seemed to unilaterally attempt to take on the Ottoman empire in the middle east and Gallipoli. At Passchendaele the British proffered 50 divisions to an offensive compared to the 6 French divisions. In WWI we see the British taking the initiative and taking the fight to the enemy well before the US entered the war.

We do not see that in WWII. We see mostly defensive holding actions and retreats until the US enters the war.