The slogan, “War never solved anything,” and the hidden agenda behind the slogan, need to be clear to everyone. Democrats need those big bucks for domestic spending to buy votes. Military spending is easier to cut if the military looks ineffective. So Democrats adopt policies that limit air strike targeting, and rules of engagement generally, that render US military force ineffective. At that point, Democrats argue that "war never solved anything," so we might as well spend the money domestically.
The problem right now is the same problem we had in Vietnam. Since World War II, Democrats seem to intentionally mess up running wars. They try half measures that prolong the conflict until everybody wants to give up and go home. Democrats' motivation is to increase domestic spending over the long term. If military efforts are seen as ineffectual, it's easier to cut military budgets and use the money to buy votes domestically. Lyndon Johnson prolonged the Vietnam War by refusing to use US air power to shut down North Vietnam's seaports. Barack Obama is prolonging the ISIS conflict by also refusing to use US air power effectively. Obama has refused to hit oil production, transportation targets and infrastructure targets that are crucial to ISIS funding and operations. ISIS makes a million dollars a day selling oil. ISIS is moving men and supplies over open desert highways. ISIS has vehicle maintenance and bomb factories in civilian neighborhoods the US refuses to destroy.
War actually does solve problems very well. War solved the world's Hitler problem. War solved the Imperial Japan problem. Through history, war solved the American Colonies' British problem, as well as Rome's Carthage problem. War is the only solution to the ISIS problem.
The slogan is absurd. The only reason for it is to excuse poor military performance followed by budgets which shift spending to domestic investments in crony capitalism and programs encouraging government dependence. If you're dependent on the government, you have to vote for the Democrats, or the gravy train is over. Quite easily done.