Wait for multiple applications run asynchronously from batch file to finish

Question

There is a simple Windows batch file that runs multiple instances of application:

start app.exe param1
start app.exe param2

Is there a way

Answer 1

In a separate batch file asynchBatch.bat put:

start app.exe param1
start app.exe param2

Then in caller batch file write:

call asynchBatch.bat
other executions
...

The other executions will start only after both app.exe param1 and app.exe param2 finish.