Time War - A Game of Time Travel and Conflict by Yaquinto (1979)
"Time War" is a tactical level Board Game simulation of a possible future where governments, using the ability to travel into time, attempt to control the present day world by altering history to their advantage.
The players assume the roles of opposing Time Magistrates working for their own Government, and seek to use their resources on hand to gain complete control of their present day world by altering history and destroying the opposing players' forces.
The Highly sophisticated Computers will predict " Jonbar Junctions" These are Critical moments in History
which you can effect to make favourable changes for your Government in the Future,
You must allocate Funds wisely to various Areas of Research and Development,improving Equipment ,Hire Technicians and Purchase of Energy 
as you will need vast amounts of Energy to send People and Equipment back and forward in Time.
You must train your Personnel well (Sentinels,Wardens,Agents and Action Teams) as this could be the difference between Success and Failure, 
Your Future depends on your Past !.
The Game is for 2 to 4 Players,Aged 12 Years to Adult.
The Game is Complete and the Contents are in Good to Very Good Condition.
The Box is in Good Condition for its Age,