The European Champions League (ECL) is one of the most prestigious football competitions in Europe, and it's no surprise that Marseille has been a regular participant. The club has a storied history in Europe, having won numerous titles throughout its long history.

One of the key elements of Marseille's tactical arrangement in the ECL campaign is their solid defense. This is evident from the team's performances during the season. Marseille has consistently played well defensively, limiting opposition attacks to only a few goals per game. They have also been able to create chances for themselves through defensive play.

In addition to their defensive record, Marseille has also had impressive away records. They have recorded victories at home against teams such as Manchester United, Paris Saint-Germain, and Liverpool. These victories have helped them establish themselves as a top contender in the ECL.

Despite their strong record on the pitch, Marseille has not forgotten about the importance of tactics in the ECL campaign. They have emphasized the importance of creating opportunities for themselves with their players, which can help them score goals and secure wins.

Overall, Marseille's tactical arrangement in the ECL campaign is solid, with a focus on creating opportunities for themselves and creating good defensive plays. While they may struggle sometimes, they remain a formidable opponent on the pitch, and their efforts will likely continue to be rewarded in the future.