 The general staff of Ukraine's armed forces did not specify what sparked this investigation. But on Sunday, a paramedic had posted an appeal to President Zelensky on social media. She said she'd stopped working alongside the brigade, accusing its commander of what she called an inhumane and unprofessional attitude. She painted a sorry picture, alleging negligence, disregard for the life and health of personnel, suppression of dissenting voices and blind careerism.