I actually figured it out on my own by accident awhile ago but never posted about it here. When making or editing an event, press on the calendar tab and select a calender with your email in it, such as Samsung calendar and will start sharing it with your other devices. For some reason the default, "My Calendar", doesn't post to the cloud.
Bigred, thanks for the posting. I just went from an S4 to an S5 plus a Tab3.0 and couldn't get the calendars to sync .... very frustrated till I read your post ... I owe you a cold beer. Thanks.
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