In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.

Question: How many lives had been lost in the Mexican-American war by the year the 1st South Carolina Volunteer Infantry was created? Passage 1:The 118th Infantry Regiment traces its lineage to the year 1846, when the 1st South Carolina Volunteer Infantry was organized for duty in the Mexican–American War. Company E, "Johnson's Rifles", lives on today as 4–118. During the American Civil War, the 1st South Carolina Volunteer Infantry was reorganized into units of the First Corps, Army of Northern Virginia, under General James Longstreet in 1861. The battalions of the South Carolina regiment first saw action at the First Battle of Bull Run, where the Union Army was defeated. They next fought in the Peninsula Campaign, and eventually had to retreat from General George B. McClellan's forces at the Battle of Williamsburg in mid-1862. Shortly after, the South Carolinians fought again at the Battle of Seven Pines, where the Union advance on Richmond, Virginia was stopped even though the Confederate forces did not deliver a decisive defeat. Longstreet's Corps recovered from the losses of the Peninsula Campaign and defeated the Union at the Battle of Gaines's Mill 26 days later, and followed the victory by decisively defeating the Union Army in the Second Battle of Bull Run. The battalions of the original 1st South Carolina took part on the Battle of Antietam on 17 September 1862, the bloodiest single-day battle in American history, with a combined tally of 22,717 dead, wounded, or missing.
 Passage 2:Despite an emergency appendectomy that delayed his spring training and shortened his time to get in shape for the season, Hershiser had been named NL Baseball Pitcher of the Month in April and a participant in the 1988 All-Star Game, getting outs against all three batters. In the eight games he started between July 10 and August 14, Hershiser had a 3–4 win–loss record with a 4.76 earned run average (ERA), raising his season ERA from 2.46 to 3.06. Following his August 14 start in which he left the game after two innings (his shortest appearance since 1985) with the Dodgers behind the Giants 8–2, he pitched complete games on August 19 (a shutout) and August 24. Prior to the game, Hershiser trailed teammate Tim Leary in shutouts, six to three, and Leary also combined with other pitchers to record a shutout that was not counted in his individual total.
 Passage 3:Following his NHL career, LaVallee played another nine seasons in various European leagues. He was with Innsbruck EV in Austria from 1987–88 until midway through 1989–90. He played for SC Bern for the remainder of that season. In 1990–91 He moved to Italy playing for HC Milano in 1991–92 he played for a different team in Milan. In 1992–93 He joined the Ayr Raiders of the BHL. Later that season he moved to EC Ratingen in Germany. He moved again during the 1992–93 season, this time to Ajoie in the Swiss National League A (NLA). In 1993–94 he went back to Germany with Düsseldorfer EG. He moved with the team in 1994–95 to the newly created Deutsche Eishockey Liga (DEL). In 1995–96 He started the season playing for the DEL's EC Hannover before returning to Switzerland and playing for HC Davos in the NLA.
1