The Ba'ath party started around 1958. The main founder of the party was a man named Salah al-Din Bita who acknowledged that he was influenced by many pro-independence, socialists, nationalists movements and leaders. One person he was said to of been influenced by included a man named Mohammad Amin al-Husayni who himself had the real ties to Germany during WW2.
Mohammad Amin al-Husayni ties to Germany all stemmed around the British control over the Middle-East ( especially Palestine as he was born in Jerusalem ) during the period after WW1 and before/during WW2. Mohammad Amin Al-Husayni was exiled from the region by the British because of his rampant support for their overthorw and his calls for the formation of a Pan Arab nationalist goverment in the region. His close ties to the Germans in general started during WW1 as he served and fought as a soldier for the Ottaman Empire against the British and just before WW2 when the Germans offered him asyllum after being kicked out of Syria. He eventually ended up commanding a SS unit in the Eastern Front and was captured by the Allies but never put on trial for war crimes. Mohammad Amin Al-Husayni had very strong anti-Zonist and anti-British feelings because of the British Mandate which allowed Jews into Palestine and because of British rule over the region.
The resentment of the British in areas like the Middle-East, Africa, Asia and India during, before and somewhat after WW2 was spurred on because of British colonialism. Countries that we know as Iraq, Syria, Lebannon, Palestine and Jordan ( might of left one or two out ) became a holding of the British Empire after WW1 when the Ottaman Empire was knocked out of the war by the British. The British then took over the regions left behind by the Ottaman Empire and controlled them just after WW2.
Just before and during WW2 the Germans and Japanese put themselves into the position of opposing the British rule in those regions and offered independence to any country with anti-British movements in exchange for their support during WW2. Men like Mohammad Amin al-Husayni were more then eager to accept German support if it meant furthering their goals of removing the British from the Middle-East and establishing a pro-Arab nationalist goverment in the region that would unite all Arab nations.
The ties made between the Ba'ath's party and the Nazi Regime at best is one made through admiration because it all focuses around the fact that the Ba'ath's founder was said to have made statements about being influenced by pro-Arab nationlist movements and leaders like Mohammad Amin al-Husayni during the time of British rule over the region prior to and after WW2.