After a season-opening slaughter of Boston University, Harvard's indoor track team faces what could be its toughest challenge of the season today as powerful Army invades Cambridge for a meet at the indoor bubble. Field events will begin at noon, and running events get underway at about 2:15 p.m.

Harvard-Army meets in the past have been close, and today's encounter should be no exception. If each team scores as expected in its strongest events, the outcome of the meet could depend upon only one or two contests. The widest margin of victory for either team in recent years came last spring when the Crimson won, 88-66.

On the basis of past performances, the Cadets should have the edge today in the pole vault, high jump, relays and sprints, while the Crimson hopes to counter with superior showings in the distance races, weight throw and long jump. The shot put and 1000-yard run are considered toss-UDS.

Army Vaults

Army should have little trouble sweeping the pole vault, an event in which three Cadets have outjumped Clayton Bredlan, Harvard's top vaulter. To make matters worse. Bredlan is a doubtful participant today due to an injury sustained against B.U.

The high jump is another event in which Army could score heavily; one of its jumpers has cleared 7 feet, and another has leaped 6 ft. 10 in, both higher han Crimson Jim Coleman's best jump, 6 ft. 9 in (outdoors).

Although plagued by injuries. Harvard's distance runners hope to retain enough manpower to score crucial points in their races. Captain Keith Colburn may have to double in the mile and 1000-yard runs, as he did in winning efforts against B.U., but could afford to relax somewhat if Roy Shaw is at full speed in the mile an event which he failed to finish against the Terriers.

The Crimson's powerful Ed Nosal is the clear-cut favorite to capture the 35??, weight throw, but teammate John Driscoll will be harder-pressed to win the shot put, possibly a pivotal event. Driscoll's 52 ft-3 in, heave last year surpasses those of the Army throwers, but be failed to approach this distance in the B.U. meet.

In assessing the probable outcome of the meet. Harvard Coach Bill McCurdy said simply, "We think we'll win; they think they'll win. It's as close as that What more can I say?"

Score Change

The CRIMSON reported Wednesday night's B.U. score was 91-18. Harvard track officials decided to delete the points the team would have won from the Terriers' forfeiture of the two-mile relay, thus making the final score, 86-18. The freshman score remained Harvard-93. B.U.- 16.