watch. we proudly introduce our mascot apprentice, private chesty xv. meet the newest fresh out of recruitment training, private chesty xv, making his final debut at marine barracks washington, following sergeant chesty xiv s paw prints. he s exactly the same as a young marine in training. short attention span, but motivated and eager to learn. for more than half a century, an english bulldog has been named after lieutenant louis b. chester puller who served in world war ii and the korean war. chesty xv was the top dog, chosen from a half dozen puppies in the northeast region. you have to look at him and find the spark. chesty s dress blues are custom fitted, made at the same place all marines and marine