The Voyages of Doctor Dolittle by Hugh Lofting

But alas! even the Three, mighty though they were, could not last forever against an army which seemed to have no end. In one of the hottest scrimmages, when the enemy had broken a particularly wide hole through the fence, I saw Long Arrow's great figure topple and come down with a spear sticking in his broad chest.

For another half-hour Bumpo and the Doctor fought on side by side. How their strength held out so long I cannot tell, for never a second were they given to get their breath or rest their arms.