Completed the following sentence: The 1st and 2nd battalions of the 2nd Engineers participated in the
Battle of Belleau Wood<unk> in direct support of the 4th Marine Brigade of the US Army's 2nd Division.<unk> Battle of Belleau Wood<unk> in direct support of the 4th Marine Brigade of the US Army's 2nd Division. Elements of the 2nd Engineers provided engineering support and fought as infantry throughout the battle. Boy they dig trenches and mend roads all night, and they fight all day!'" - John Thomason.