Armies aren't designed to rebuild countries, never have been. Armies are designed to fight and win wars.

During WWII, there were "Civil Affairs Units" sent as part of an invasion -- for example, my father served in the 4th CAU in Manila. These units were specially trained and supported to provide temporary government, police, and infrastructure support until the local civilian government could again take over.

Regular soldiers, infantry, armor, artillery, MPs, aren't trained or focused for civil affairs and shouldn't be expected to handle such duties.

Seems to me like someone has blundered....