The communist-commanded military reaffirmed Tuesday it will take action against Croatia, Slovenia and nationalist groups across Yugoslavia if they persist in defying a presidential order to disband "illegal armed units" and surrender their weapons by Jan. 19.

The statement coincided with a report, published in the national newspaper Borba under the headline "Nobody obeys the order," that said not a single weapon had been surrendered to the military since the eight-man Yugoslav presidency issued its directive Jan. 9.The warning served to heighten apprehensions that army leaders committed to a federation based on socialism plan a crackdown, similar to that under way in the Soviet Union's Baltic states, against nationalist and secessionist forces whose struggle for power is pushing Yugoslavia toward civil war.