Earlier quoted context omitted.
Let's be realistic: Congress has given away its power for decades. It is nowadays a Congress permanently divided and pretty much non-functional.
Congress has never had the power to command the military, that's not one of the powers granted to it in the constitution.
Hamilton, Washington, and Madison all separately wrote that Section 8's War Declaration clause was intended to be a substantial limit on the President's power. Even the small, mini-conflicts in the 1800s required Congressional approval to initiate, it wasn't until the 1950s that the Executive branch destroyed that check on Executive power.