In this book, the two sides' objectives, weapons and equipment and fighting styles are assessed and compared in the context of three featured battles: Carnuntum (170), where a Roman legion was vanquished and Italy invaded; the 'Battle on the Ice' (172), where the Romans fought their lighter-armed Iazyges opponents on the frozen Danube; and the so-called 'Miracle of the Rain' (174), during which a trapped Roman force facing annihilation was able to defeat numerically superior Germanic forces.
This is partial text from the full article (usually with photos) at https://armorama.com/news/review-barbarian-warrior-vs-roman-legionary-marcomannic-wars-ad-165-180