TACPOLTACPOL (Tactical Procedure Oriented Language) is a block structured programming language developed by the United States Army for the TACFIRE Tactical Fire Direction command and control application.TACPOL is similar to PL/I.The most used programming languages Smalltalk PowerShell Emacs Lisp Apache Groovy MATLAB C Sharp Dart Erlang Swift R Ruby C F Sharp Clojure Rust PHP Lean (proof … C++ Elixir Kotlin Perl Fortran CoffeeScript Objective-C WebAssembly Go Visual Basic … Python Lua