In core worlds, there are several ways to give bonus ground strength to Infantry. For example there is a Cyborg who gives +1 Ground strength to each Infantry that attacks with him. If I use my Medi-bot to save my now 2 strength grunt, how long does that +1 strength last? Until the end of the invasion? Until the end of the round? End of the game?
Till the end of the current invasion. Cyborg reads:
The rule book defines an Invasion as:
So, the saved Ground Unit will only get the +1 bonus during the current invasion (cyborg's rules text). The Med-bot can save the troop from being discarded, but the bonus ends immediately after the current Invasion that Cyborg is participating in.