The army commander personally went to inspect the front line.
Tips
culture
In the PLA rank system, 军长 commands an 军 (army/corps) of roughly 30,000-60,000 soldiers — senior to 师长 (division commander), junior to 大军区司令 (military region commander). The rank typically carries the personal grade of 少将 or 中将.
usage
Very common in Chinese war films and dramas about the Anti-Japanese War and Civil War. The 亮剑-era 李云龙 is the prototypical rough-edged 团长 who gets promoted to 军长.