mogadishu two somali soldier wound gun fight troop monday police officer say worry internal rift military history factionalism fight resurgence militant islamists al shabaab group suspect behind country single deadly attack civilians month kill least 358 people nur ali police officer tell reuters brief fight take place yaqshid district capital mogadishu trigger misunderstand district commissioner security force district commissioner home guard security force exchange gunfire ali say add soldier briefly seize commissioner office dispute resolve ali say two soldier wound somali military often trouble low morale cause miss salaries factionalism defections country virtually lawless since early 1990s dictator siad barre depose al shabaab claim responsibility twin bomb oct. 14 flatten several build carry attack security target years fight topple western-backed government often also kill civilians two somali soldier wound gun fight fellow troop