The coolie in the CCF ranks has no superior in the world at making long approach marches by night and hiding by day, with as many as fifty men sharing a hut or cave and subsiding on a few handfuls of rice apiece. Night attacks became the rule. CCF attacking forces ranged as a rule from platoon to a company in size, being continually built up as casualties thinned the ranks. After giving CCF tactics due credit for their merits, some serious weaknesses were also apparent. Each Chinese soldier had issued to him 80 rounds of small arms ammunition upon crossing the Yalu River. This was his total supply. Artillery and mortar rounds were severely limited. Radio communications extended only to the regimental level, telephones to the battalion level. Below that the companies depended on runners, bugles, whistles, flares and flashlights for communication. A battalion once committed to an attack often kept on as long as its ammunition lasted, even if events indicated that it was beating its brains against the strongest part of the opposing line. The result in many such instances was tactical suicide.