Ah, using the old percentages game to make a point. Reagan built up the military and also managed to cut taxes while digging us out of the hole that Nixon and Carter had gotten us into.
As a POTUS with a democrat controlled Congress, he did okay in my book.
Actually a big increase in defense spending was done in the next to last Carter Budget.
Let's see Deficit spending to take out the Russians who never attacked us is OK. Deficit spending to take out Islamists who attacked our capital and largest city is not justified.
Reagan did not have the testicles to veto spending. Under Reagan the defense budget did not grow nearly as much as welfare spending did.
And while the house was under democratic control for all of Reagans years, for the first six years of his presidency the Senate was under Republican control. And spending bills have to pass both houses.
If Reagan had wanted to cut spending for the first six years all he had to do was have the Republican Senate refuse to pass the House's big spending budget.