Is the US preparing for a small scale war now?

The US is trying to recall 1m reservists now.

https://finance.yahoo.com/news/trump-calls-reserves-coronavirus-battle-235113292.html

The US is also trying to get Americans overseas to return home.

https://thehill.com/changing-america/resilience/natural-disasters/490477-pompeo-americans-who-wish-to-return-home-from

These 2 actions are very uncanny in my eyes. Why?

China didn't activate its reservists to handle the virus outbreak but used only its active military personnel.  China also didn't try to get all its Chinese overseas back home as this would pose a high risk of imported cases.

It looks like the US is preparing for a small scale war instead of handling the virus outbreak.  The US always starts a war when it has a homefront problem that it cannot handle.  The homefront problems in the US are the covid-19 outbreak and the low oil price that is hurting its shale oil producers.

Which country will the US attack this time?

Anybody wanna make a guess?