Marie hastened after him. As the relief was forming in line, she seized a Mauser rifle that stood leaning against a huge rock, grabbed up a cartridge belt well filled with Mauser ammunition that was lying on the ground near by, hastily adjusted it to fit her waist measure, buckled it on and fell into the rear rank. "Count fours!" ordered the Sergeant. As is usual in military affairs, the front and rear rank men count in unison; that is, number one in the front rank and number one in the rear rank both count "one" at the same time; second file counts "two," etc. When it came to Marie she piped out simultaneously with the corporal who stood in front of her, "quatro." (four). As the guard was marched along the stony pathways on Corregidor Island and the various sentinels were relieved, Marie soon saw that there was not going to be a place for her. She tip-toed up to the corporal who was posting the relief and asked him where he was going to station her. "Never mind," said the corporal, "we have a place for you." And sure enough, they had. Every soldier or civilian who has ever been on this island will readily recall the rough, hard-beaten, winding path that led from the summit of the hill, in a south-westerly direction, down over precipices, around clumps of bamboo, to a beautiful fresh water spring which bubbled out of the coral rocks at a point just high enough to prevent it from being inundated or even infiltrated during the season of high tides. A few feet from this spring and elevated but slightly above it, is a massive, flat rock. Along the north and west sides of this rock is a vertical stone precipice some eight feet high, which from its upper edge inclines back gradually at an angle of about twenty degrees above a horizontal plane, toward the crest of the island. On this rock Spain firmly bolted one of her most modern cannon--a good seven-inch gun. It was so situated on a revolving casement that its shots could be made to sweep the whole Boca Grande channel, as the large entrance south of the island is called. Marie had often operated this gun. She had done splendid work with it on a floating target two miles distant. Its deadly roar was her delight. Oh! if she could but use it just once on an actual enemy instead of firing it at an indicated one! When the old guard had been relieved and the sentries were marched back to the guard-house to be dismissed, poor Marie, heavy hearted, marched along. Just as they approached the guard-house, the sergeant motioned to her to fall out and to come toward him. This she did. Into her ear he whispered the information that was to start her on her eventful military career. "Marie," said he, "the officer of the Guard informs me that we cannot use you in the infantry service tonight, but that you will be needed with the artillery." "Good!" exclaimed Marie, "Where shall I serve?" "At the new gun on the large rock near the spring," answered the Sergeant.