A selection of dog tags (English, American and German) found by David Murray, 39, of Much Hadham, Hertfordshire, after he discovered a World War II prisoner of war camp at the bottom of his back garden. The camp, now known to be Wynches Camp 411, was built in 1939 and was operational until at least 1948.
the RTM(Requirements Trace Matrix ) is used as a test planning tool to help determine how many tests are required, what types of tests are required, whether tests can be automated or manual, and if any existing tests can be re-used. Using the RTM in this way helps ensure that the resulting tests are most effective.
Whereas test strategy defines guidelines for test approach to be followed in order to achieve the test objectives and execution of test types defined in testing plan. It deals with test objective, approach, test environment, automation strategy and tools, and risk analysis with contingency plan. To summarize test plan is a vision of what you want to achieve and test strategy is an action plan designed to achieve this vision! Hope this will clear all your doubts.