The point is, yes the Founding Fathers wanted the President to communicate with Congress when it came to war
Thomas Jefferson wrote a letter to James Madison on September 6, 1789, addressing a number of constitutional ideas, including war-making. Jefferson also reinforces the concept of a separation of powers between declaring war and waging war, recognizing Congress as the branch that declares war, and the President as the part of government that leads military operations. Like the other Founding Fathers, Jefferson feared concentrated executive power, but recognized that while the country did not want the President to engage in unchecked war-making powers, the President must be able to act militarily when hostilities rise during an emergency exception. While Jefferson also recognized that the President’s job was not to initiate war, his role does indeed include faithfully executing war when needed for the defense of the United States.
James Wilson during the Pennsylvania Ratifying Convention in 1787 did indeed argue that the President’s role as Commander in Chief did not typically activate until a declaration of war was approved by Congress, but he also indicated that the President could act swiftly as Commander in Chief if war was imminent.
The point is, yes the Founding Fathers wanted the President to communicate with Congress when it came to war, and expected war, particularly long drawn out wars, to be declared by Congress before the President engaged in his duties as Commander in Chief. Yes, it is preferable in most situations that Congress and the President work together, with the President seeking congressional guidance, approval, and funding every step of the way. In a perfect world that would always be the model. But, as shown by the above references, the Founding Fathers also understood that the preferred model is not always what is going to be available. It would be suicide when an imminent attack by an enemy is on the horizon and a quick decisive strike is necessary that Congress demand that they be given the plans, that they debate it, that they vote on it, and eventually they give the President a thumbs up long after the decisive strike was necessary. Every Founding Father that the commenter, Robert Brown, references also argues that first seeking permission from Congress is foolhardy when the United States is in imminent danger and the President is required to act quickly. The President must be able to wage war when necessary.
Yes, the Founders were wary of executive overreach. Yes, they vested the power to declare war in Congress. But they understood the practical necessity of swift executive action in emergencies. As Hamilton and Madison made clear--the President’s role as Commander in Chief was not meant to be ornamental--it was designed to ensure America could respond decisively to threats, especially when Congress was not in session, could not convene quickly, or in our case is populated with traitors who have a history of leaking important information to our enemies. Congress may declare war, but deployment of troops or equipment must be left to military leadership under executive direction--and without congressional interference in the case of emergencies and the imminent threat of attack.