The significance of Bachaler's actions during the war against the Kingdom of Bohemia would depend on the historical context and specific events being referred to, as "Bachaler" is not a widely recognized historical figure in common historical narratives. If Bachaler played a role in a specific conflict involving the Kingdom of Bohemia, his actions could have had various impacts such as influencing military strategies, affecting political alliances, or contributing to the outcome of specific battles.

To provide a more accurate and detailed answer, it would be necessary to have more information about the specific individual or event being referenced, as well as the time period in which these actions took place. If you have additional details or context, please share them for a more tailored response.