After three field campaigns in 2017, it's time to publish again. This time observations made in the ML-CIRRUS campaign in 2014. This was my very first airborne campaign and I got to be part of the KIT team operating the Small Ice Detector 3. The campaign focused on the microphysical properties of mid-latitude cirrus ice crystals. For this article, we have analysed the mesoscopic complexity of small (<50 µm) ice crystals in cirrus clouds of different origins.