Sentence:  &#91;[https://archive.org/details/warofrebellion09secrrich/page/495/mode/1up page 495]&#93; He drove them with great slaughter from the <WSD>bosque</WSD> they had then seized, repulsed a determined charge of their Lancers, made with audacity and desperation, and was master of the field. [...] &#91;[https://archive.org/details/warofrebellion09secrrich/page/496/mode/1up page 496]&#93; The heavy <WSD>bosques</WSD> in our front were terminated by a drift of sand extending from the high bluff of the Contadero to the river. Behind this drift the enemy, concealed from my observation, rallied all their forces abandoning wagons on the sand hills, tents, and other supplies, including ammunition, with the desperate resolve to storm our batteries. 
Meaning of the word marked with <WSD> tags:  A gallery forest found growing along a river bank or on the flood plain of a watercourse.