What key element made glass bottles logistically problematic for large-scale military transportation?

They were heavy, fragile, and difficult to transport

While Nicolas Appert’s use of thick glass bottles was central to his initial successful method, this packaging choice quickly proved unsuitable for the realities of military logistics. Moving large quantities of provisions across the rough and often challenging terrain associated with warfare meant that fragility was a major liability; glass bottles were easily broken, leading to loss of rations. Furthermore, glass containers possessed significant weight compared to potential alternatives. The inherent difficulties in reliably transporting heavy, breakable glass containers across long distances spurred the need for a more robust and practical packaging format, which eventually led to the adoption of tinplate containers.