Texas This category is for battlecruisers commissioned or otherwise operated by the Royal Australian Navy. For battlecruisers by era or conflict, or battlecruisers designed or built in Australia for use by other navies (if any), see Category:Battlecruisers of Australia. Subcategories This category has only the following subcategory. I Indefatigable-class battlecruisers of the Royal Australian Navy (1 P)