When not searching for wounded hidden in the tangle of under-brush the chaplain was busy helping the surgeons at a first aid dressing station.

of apiñar, pyramidal, heaped up, crowded, closely pressed, dense; os grupos, dense crowds, closely packed groups; -as matas, tangled (or dense) shrubbery (or under-brush); -as olas, tossing waves.

All night they plunged forward through the tangled thicket and under-brush, surrounded by thick darkness, glancing now and then upward to their only light, "Star of the North!

Sheathing the knife and seizing his rifle, he again set forward, and did not stop till he gained a small but thick under-brush.

The ground was very muddy, and drift-wood and under-brush obstructed my way.