The article "Army Dismissed Massacre Allegation" [front page, Oct. 1] understates the threat that North Korean soldiers disguised as civilian refugees posed to U.S. forces during mobile phases of the Korean War.

The threat posed was not exaggerated by inexperienced and ill-prepared U.S. soldiers, as the article implied. The 8th Army's official Combat Information Bulletin issued at about the same time as the No Gun Ri incident stated, "Enemy infantry will infiltrate into our lines disguised as refugees in civilian clothing carrying disassembled firearms and uniforms in bundles."

The 1st Cavalry Division engineer battalion was attacked by just such a party and suffered more than 15 casualties.

As long as the front remained in flux, U.S. forces faced significant security threats from communist guerrillas and regular North Korean and Chinese forces disguised as refugees.

Instead of imputing blame or worse on the U.S. military for taking measures to protect itself from the threat posed by disguised infiltrators, the article ought to have attached blame where it belongs -- with the North Korean and Chinese forces for creating tragedies such as No Gun Ri through a deliberate policy of exploiting hapless civilians.

MACK V. TRUSLOW

Alexandria