Oath of Muster The oath taken by voluteers enlisting in the Union army. Its wording in full was as follows:
“I, ____ _____, do solemnly swear that I will bear true allegiance to the United States of America, and that I will serve them honestly and faithfully against all their enemies and opposers whatsoever, and observe and obey the orders of the President of the United States, and the orders of the officers appointed over me according to the rules and articles for the government of the armies of the United States.”
obliged Obligated to someone because that person provided help or a kindness. The word was used to mean “I’m in your debt” or even “Thank you.” A soldier might say, “That skillet you loaned me helped a lot. I’m much obliged.” The term is still used.
oblique order of attackSee echelon attack.
obstruction sweeper A wooden and iron device on the bow of a warship to destroy torpedoes (mines). On the sweeper’s underside were numerous iron stanchions (bars) to which were attached chains with hooks that grabbed the torpedoes, dragged them to the surface, and exploded them.
The obstruction sweeper discovered and exploded mines like this floating torpedo. Copyright Inge Wright 1999.