In the eyes of others, Marshal Mannstein's approach may indeed be highly efficient, but the cost is equally great. Engaging in continuous offense and defense against the demons, repeatedly battling over the same city in a tug-of-war, it's impossible not to suffer losses—and significant ones at that.
However, from a different perspective, the situation appears to be entirely different. He might not agree with Mannstein's approach, but he deeply admires such strategic brilliance.
Losses?
Losses are inevitable in warfare. Any attempt to avoid losses entirely in a war is foolish. An outstanding commander is deemed exceptional because he minimizes losses, not because he avoids them altogether. Moreover, he does not abandon opportunities in pursuit of avoiding losses. Marshal Mannstein epitomizes this principle.
