Sentence examples for a very old tactic from inspiring English sources

The phrase "a very old tactic" is correct and usable in written English.
You can use it when referring to a strategy or method that has been employed for a long time, often implying that it is well-known or traditional.
Example: "The use of misinformation in political campaigns is a very old tactic that dates back centuries."
Alternatives: "an ancient strategy" or "a long-standing approach".