Townsend pointed out that the military forces were operating closer and deeper into the Iraqi formation.
"[W]e adjusted our posture during the east Mosul fight and we embedded advisers a bit further down into the formation," he added.
On Monday, US Secretary of Defense James Mattis met with Iraqi Prime Minister Haider Abadi and Defense Minister Arfan Hayali to discuss US-Iraqi cooperation, progress in operation to liberate Mosul from Islamic State (Daesh) terrorist group.
On Sunday, Abadi announced the beginning of operations to liberate the western part of Mosul. The eastern part of the city was liberated by the troops of Baghdad and US-led anti-terror coalition in January, while the rest of the city has been still occupied by terrorists.